JNCI:研究发现极大增加乳腺癌死亡风险的因素!

2018-01-21 佚名 medicalxpress

瑞典Karolinska医学研究所的研究人员发现,与低异质性的患者相比,在同一肿瘤内高异质性雌激素受体的患者,乳腺癌死亡的风险是前者的两倍。这项发表在《美国国家癌症研究所杂志》上。研究还表明,在25年的高死亡率与其他已知的肿瘤标志物无关,而且对于Lumina A型乳腺癌也是如此,这是一种预后良好的亚型。

瑞典Karolinska医学研究所的研究人员发现,与低异质性的患者相比,在同一肿瘤内高异质性雌激素受体的患者,乳腺癌死亡的风险是前者的两倍。这项发表在《美国国家癌症研究所杂志》上。研究还表明,在25年的高死亡率与其他已知的肿瘤标志物无关,而且对于Lumina A型乳腺癌也是如此,这是一种预后良好的亚型。

乳腺癌最常见的形式是雌激素受体阳性,即所谓的激素敏感型乳腺癌。这意味着肿瘤需要雌激素生长。发展这种乳腺癌的妇女仍有长期死于疾病的风险。人们也知道,当乳腺癌肿瘤扩散时,雌激素受体可以改变,这会影响生存。然而,为什么会出现这种情况,却不为人所知,但一个可能的解释是,在同一个肿瘤中有不同程度的雌激素受体的肿瘤细胞。这被称为肿瘤内异质性。

在目前的研究中,瑞典和美国的研究人员试图发现乳腺癌患者是否具有高异质性的雌激素受体在他们的乳腺癌肿瘤中有较高的长期死亡风险。为此,他们研究了593例临床研究中的患者的fates,他们要么接受了他莫西芬治疗,要么接受了术后的全身治疗。在1976年至1990年期间,所有女性都被诊断为绝经后雌激素受体阳性乳腺癌。

卡罗林斯卡医学院生物科学系研究员LindaLindstr?m说:“我们的研究显示,与异质性低的患者相比,肿瘤内雌激素受体异质性高的患者在诊断后可能死亡25年。这与他们是否接受他莫昔芬和其他已知的肿瘤标志物无关。”

研究人员还发现,对于肿瘤内异质性高的患者,死亡风险较高,也适用于Luminal A乳腺癌患者,这种乳腺癌是一种被认为预后良好的雌激素受体阳性乳腺癌亚型。

Lindstr?m博士继续说:” 患有乳腺癌和高肿瘤内异质性的雌激素受体的病人死于这种疾病的可能性是前者的两倍。鉴于Luminal A型乳腺癌亚型患者一般认为预后良好,我们相信如果得到验证,这些新发现在近期内应该可以使用。”

原始出处:

Linda S Lindstr?m, Christina Yau, Kamila Czene, et.al. Intratumor Heterogeneity of the Estrogen Receptor and the Long-term Risk of Fatal Breast Cancer. JNCI: Journal of the National Cancer Institute 19 January 2018

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    2018-02-03 白水鉴心

    学习

    0

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    2018-01-21 139****0239

    henhao

    0

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    2018-01-21 情途末路

    学习了.获益匪浅!感谢分享

    0

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